CN106683848A - High-current lead magnetic flux leakage shielding device for transformer core - Google Patents
High-current lead magnetic flux leakage shielding device for transformer core Download PDFInfo
- Publication number
- CN106683848A CN106683848A CN201611087161.4A CN201611087161A CN106683848A CN 106683848 A CN106683848 A CN 106683848A CN 201611087161 A CN201611087161 A CN 201611087161A CN 106683848 A CN106683848 A CN 106683848A
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- CN
- China
- Prior art keywords
- unshakable
- determination
- core
- copper material
- shading ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The invention relates to a high-current lead magnetic flux leakage shielding device for a transformer core and belongs to the technical field of transformer manufacturing. The technical scheme is that a copper shielding ring (3) is arranged at the position of the last stage lamination of the transformer core; a first core heat dissipation oil way (2) is arranged between the copper shielding ring (3) and the second last stage lamination of the core; a pull plate (11) is arranged outside of the copper shielding ring (3); a second core heat dissipation oil way (4) is arranged between the copper shielding ring and the pull plate of the core; and an insulation gasket is arranged between the pull plate and the web of the core, so the pull plate and the web of the iron are insulated, thereby preventing overheat resulting from a ring current caused by a high current lead. According to the device, the magnetic flux leakage is shielded through utilization of the magnetic resisting effect of the ring current generated by copper; an insulation structure is employed between the web and the pull plate; the original positions of the laminations of the core are replaced by copper; the core heat dissipation oil ways at two sides of the last stage core outside of the copper shielding ring are utilized; the overheat effect of the magnetic flux leakage in the laminations of the core is greatly restrained; and the copper is prevented from partial overheat due to the ring current.
Description
Technical field
The present invention relates to a kind of transformer core great current lead wire magnetic leakage shielding device, belongs to Transformer Manufacturing Technology neck
Domain.
Background technology
Large Copacity, high-tension generator transformer, because its capacity is larger, leakage magnetic flux total amount is also big, causes quilt unshakable in one's determination
Leakage field affects, and hot-spot problem is more serious, and the presence of low-voltage, high-current lead, more exacerbate the hot-spot feelings of iron core
Condition.Background technology then can be formed loop and be caused circulation wherein using web unshakable in one's determination, arm-tie attachment structure, link position pole
It is overheated easily to occur；If to taking insulation system therebetween, leakage field can enter neighbouring core-lamination stack, due to core-lamination stack it is same
For electric conductor, circulation is produced in lamination, and the seaming position resistance of lamination is big, and virtual connection is easily produced, therefore the seam of lamination
Position easily produces hot-spot.
The content of the invention
It is an object of the present invention to provide a kind of transformer core great current lead wire magnetic leakage shielding device, former unshakable in one's determination folded retaining
In the case of the sectional area of piece more than 98%, substantially avoid great current lead wire leakage field and heat affecting is crossed to unshakable in one's determination, while remaining change
Depressor overwhelming majority no-load performance and in short-term overload performance, solve the problems referred to above present in background technology.
The technical scheme is that：
A kind of transformer core great current lead wire magnetic leakage shielding device, comprising arm-tie, heat radiation oil duct one unshakable in one's determination, copper material shading ring
With deep fat road two unshakable in one's determination；Copper material shading ring is provided with transformer core final stage lamination, copper material shading ring is folded with penult unshakable in one's determination
Heat radiation oil duct one unshakable in one's determination is set between piece, and copper material shading ring outside arranges arm-tie, arranges between copper material shading ring and arm-tie unshakable in one's determination
Deep fat road two unshakable in one's determination；Insulation spacer is set between arm-tie and web unshakable in one's determination, makes to be insulated between arm-tie and web unshakable in one's determination, to prevent
Circulation caused by great current lead wire and cause it is overheated；Remove final stage lamination unshakable in one's determination, copper material shielding is set in same position
Ring, arranges deep fat road one unshakable in one's determination between copper material shading ring and penult lamination, same between copper material shading ring and arm-tie unshakable in one's determination
Deep fat road two unshakable in one's determination is set, i.e. copper material shading ring both sides are provided with heat radiation oil duct, keep the radiating condition that its is good.
Using the present invention, the excellent conductive performance of copper material is made full use of so as to short-circuited conducting sleeve is formed on surface unshakable in one's determination, using ring
Diamagnetic principle is flowed, greatly contains overheated effectiveness of the leakage field in iron core.Further, since disconnecting web, arm-tie, this is short
Road loop has not existed, and will not produce circulation overheat condition around here yet.
The invention has the beneficial effects as follows：Patent of the present invention makes full use of the excellent conductive performance of copper material, is produced using copper material
Circulation it is diamagnetic effect shielding leakage field, and between web, arm-tie adopt insulation system, remove final stage lamination unshakable in one's determination, by former ferrum
Heart lamination position is changed to copper material, deep fat road one unshakable in one's determination is arranged between copper material shading ring and penult lamination, using the height of copper material
Electric conductivity makes it produce circulation so that leakage field must not be entered in core-lamination stack under vortex diamagnetic effect, while in copper material shielding
Using final stage ferrum both sides iron core deep fat road outside ring, strengthen the radiating to copper material；Greatly contain mistake of the leakage field in core-lamination stack
Thermal effect is used；Copper material is avoided simultaneously due to producing circulation and hot-spot.
Description of the drawings
Fig. 1 is embodiment of the present invention core construction transverse sectional view；
Fig. 2 is embodiment of the present invention iron core principal post section partial sectional view；
In figure：Arm-tie 1, heat radiation oil duct 1 unshakable in one's determination, copper material shading ring 3, deep fat road 24 unshakable in one's determination.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of transformer core great current lead wire magnetic leakage shielding device, comprising arm-tie 1, heat radiation oil duct one 2, copper material unshakable in one's determination
Shading ring 3 and deep fat road 24 unshakable in one's determination；Copper material shading ring 3, copper material shading ring 3 and ferrum are provided with transformer core final stage lamination
Setting heat radiation oil duct 1 unshakable in one's determination between heart penult lamination, the outside of copper material shading ring 3 arranges arm-tie 1, copper material shading ring and iron core
Deep fat road 24 unshakable in one's determination is set between arm-tie；Insulation spacer is set between arm-tie and web unshakable in one's determination, make arm-tie and web unshakable in one's determination it
Between insulate, what is caused with preventing the circulation caused by great current lead wire is overheated；Remove final stage lamination unshakable in one's determination, in same position
Copper material shading ring 3 is set, deep fat road one unshakable in one's determination, copper material shading ring and iron core are set between copper material shading ring and penult lamination
Same between arm-tie to arrange deep fat road two unshakable in one's determination, i.e. copper material shading ring both sides are provided with heat radiation oil duct, keep its good to dissipate
Heat condition.
Using the present invention, the excellent conductive performance of copper material is made full use of so as to short-circuited conducting sleeve is formed on surface unshakable in one's determination, using ring
Diamagnetic principle is flowed, greatly contains overheated effectiveness of the leakage field in iron core.Further, since disconnecting web, arm-tie, this is short
Road loop has not existed, and will not produce circulation overheat condition around here yet.
Claims (1)
1. a kind of transformer core great current lead wire magnetic leakage shielding device, it is characterised in that：Comprising arm-tie（1）, radiating unshakable in one's determination
Oil duct one（2）, copper material shading ring（3）With deep fat road two unshakable in one's determination（4）；Copper material shading ring is provided with transformer core final stage lamination
（3）, copper material shading ring（3）Heat radiation oil duct one unshakable in one's determination is set between penult lamination unshakable in one's determination（2）, copper material shading ring（3）Outside
Arm-tie is set（1）, deep fat road two unshakable in one's determination is set between copper material shading ring and arm-tie unshakable in one's determination（4）；Between arm-tie and web unshakable in one's determination
Insulation spacer is set, makes to be insulated between arm-tie and web unshakable in one's determination, the mistake caused with preventing the circulation caused by great current lead wire
Heat；Remove final stage lamination unshakable in one's determination, copper material shading ring is set in same position（3）, copper material shading ring and penult lamination it
Between deep fat road one unshakable in one's determination is set, it is same between copper material shading ring and arm-tie unshakable in one's determination that deep fat road two unshakable in one's determination, i.e. copper material shading ring are set
Both sides are provided with heat radiation oil duct, keep the radiating condition that its is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087161.4A CN106683848A (en) | 2016-12-01 | 2016-12-01 | High-current lead magnetic flux leakage shielding device for transformer core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087161.4A CN106683848A (en) | 2016-12-01 | 2016-12-01 | High-current lead magnetic flux leakage shielding device for transformer core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106683848A true CN106683848A (en) | 2017-05-17 |
Family
ID=58867030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087161.4A Pending CN106683848A (en) | 2016-12-01 | 2016-12-01 | High-current lead magnetic flux leakage shielding device for transformer core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106683848A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05144647A (en) * | 1991-11-22 | 1993-06-11 | Toko Inc | Core for transformer |
| CN201262885Y (en) * | 2008-08-27 | 2009-06-24 | 保定天威集团有限公司 | External loading type conformal shielding made through bending copper or aluminium tube stick for transformer structural member |
| CN202405083U (en) * | 2011-12-06 | 2012-08-29 | 保定天威集团有限公司 | Iron core drawstring shielding structure for large transformer |
| CN103680875A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in magnetic conductive pressing plate structures of transformer |
| CN103680855A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in converter transformer core pulling plate column ring-current bypass structure |
| CN203617098U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Transformer ascending flanged base with shielding function |
| CN105428032A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Self-shielding leakage flux anti-overheating iron core |
-
2016
- 2016-12-01 CN CN201611087161.4A patent/CN106683848A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05144647A (en) * | 1991-11-22 | 1993-06-11 | Toko Inc | Core for transformer |
| CN201262885Y (en) * | 2008-08-27 | 2009-06-24 | 保定天威集团有限公司 | External loading type conformal shielding made through bending copper or aluminium tube stick for transformer structural member |
| CN202405083U (en) * | 2011-12-06 | 2012-08-29 | 保定天威集团有限公司 | Iron core drawstring shielding structure for large transformer |
| CN103680875A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in magnetic conductive pressing plate structures of transformer |
| CN103680855A (en) * | 2013-12-20 | 2014-03-26 | 保定天威保变电气股份有限公司 | Built-in converter transformer core pulling plate column ring-current bypass structure |
| CN203617098U (en) * | 2013-12-25 | 2014-05-28 | 保定天威保变电气股份有限公司 | Transformer ascending flanged base with shielding function |
| CN105428032A (en) * | 2015-12-28 | 2016-03-23 | 保定天威保变电气股份有限公司 | Self-shielding leakage flux anti-overheating iron core |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |
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| WD01 | Invention patent application deemed withdrawn after publication |